Wireshark mailing list archives
Re: 8-10% packet error/loss is normal wired network?
From: Kok-Yong Tan <ktan () realityartisans com>
Date: Thu, 12 Jul 2012 17:15:57 -0400
On 7/11/12 15:56, Flako wrote:
Hello Prigge, Jim The printer is at 100Mb / s FULL with autonegotiation disabled, the desktop was as 1Gb / s FULL with autonegotiation enabled. The swicth A (100Mb / s) and B (1Gb / s) are connected directly to each other. Now connect the Desktop Printer and a switch C (only two), then swich C connects directly to swicth A. I'm sniffer on the Desktop to see differences and discard things. I tell them when finished. Thank you for writing so far. (Examples of how to find a fault will serve me now or the next)
Are your statements above accurate (printer has autonegotiation *DISABLED* and desktop has autonegotiation *ENABLED*)? Both devices *MUST* match, even if one has autonegotiation enabled. i.e., If the desktop has autonegotiation enabled, then the printer *MUST ALSO* have autonegotiation enabled. Otherwise autonegotiation will fail and the device with autonegotiation enabled will drop down to half duplex. See this:
<http://en.wikipedia.org/wiki/Duplex_mismatch#Duplex_mismatch_due_to_autonegotiation>Hansang Bae mentioned this in a session at a prior Sharkfest during one of his very illuminating "Deep Dive" packet analysis sessions.
Reality Artisans, Inc. # Network Wrangling and Delousing P.O. Box 565, Gracie Station # Apple Certified Consultant New York, NY 10028-0019 # Apple Consultants Network member <http://www.realityartisans.com> # Apple Developer Connection member (212) 369-4876 (Voice) # My PGP public key can be found at<https://keyserver.pgp.com>
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Current thread:
- 8-10% packet error/loss is normal wired network? Flako (Jul 10)
- <Possible follow-ups>
- Re: 8-10% packet error/loss is normal wired network? Jim () agdatasystems com (Jul 10)
- Re: 8-10% packet error/loss is normal wired network? Flako (Jul 10)
- Re: 8-10% packet error/loss is normal wired network? Prigge Scott (Jul 10)
- Message not available
- Re: 8-10% packet error/loss is normal wired network? Jim Aragon (Jul 10)
- Re: 8-10% packet error/loss is normal wired network? Flako (Jul 11)
- Re: 8-10% packet error/loss is normal wired network? Frank Bulk (Jul 11)
- Re: 8-10% packet error/loss is normal wired network? Flako (Jul 12)
- Re: 8-10% packet error/loss is normal wired network? Kok-Yong Tan (Jul 12)
- Re: 8-10% packet error/loss is normal wired network? Shawn T Carroll (Jul 12)
- Re: 8-10% packet error/loss is normal wired network? Flako (Jul 10)